Which shower pump for loft insulation.

[a1lry]

Need a shower pump for fitting in the loft as no space in airing cupboard and can't access under the bath.
Have a dedicated 22mm essex flange in hot cylinder and 22mm dedicated from the cold tank although this is still the old galvanised one.
Height from base of cold tank to loft floor is 30in.
Shower is Grohe avencys which is currently being used but lacking pressure.
Shower is always used but doesn't need to blast you into next week.
Tapstore trying to sell me a Techflow anti gravity but don't trust them.
I realise that shower pumps aren't meant to be above the hot cylinder for trapped air reasons and lack of pressure as pump pushes water not pulls it.
Thanks.

 

[simond]

You should be able to use a positive pressure pump but you must follow the manufacturer instructions.

Strangely, they vary significantly in their requirements so i suggest you download them before committing on a purchase. Personally I would not fit a shower pump because the noise would irritate me, and they tend to vibrate themselves to pieces over time.